Common Resources Source of common resources used across the RemoteCOM documentation Tables Specifications Redisage PN C20 C21 C22 C23 C24 C25 Ports RS232 2x - - 4x - 2x RS485 - 1x - - 4x 2x RS232/RS485 - - 2x - - - Microcontroller ESP32 STM32F4 WiFi N/A Power Voltage 12-30 VDC Power < 1 W Frame ground connection yes Baud rate up to 115200 bps LED indicators communication Tx, Rx and power RS485 termination 120 ohm manually enabled Connector RS232/RS485 8-pin terminal block max. 2.5 mm 2 wire Power 3-pin terminal block max. 2.5 mm 2 wire Ethernet RJ45 Transmission distance RS485 max. 1,200 m at 9.6 kbps; max. 400 m at 115.2 kbps (Belden 9841 2P twisted-pair cable, if different cables are used, the transmission distance may change) RS232 max. 15 m at 115.2 kbps Mounting and enclosure DIN rail, plastic PA - UL 94 V0, black/green Temperatures -40°C to +75°C operating and storage Humidity 10 - 90% RH, non-condensing ESD protection ±4 kV contact discharge / ±8 kV air discharge Certification  CE, RoHS, EMC, LVD Norms 61000-6-2 - Immunity standard for industrial environments 61000-6-4 - Emission standard for industrial environments Pin assignments C20 C21 C22 C23 C24 C25 Configuration by the Web Page Ports page Item Description Service RemoteCOM The RemoteCOM option lets to attach the port to a computer running the Redisage Configurator as if it would be physically present in the computer. TCP Socket TCP/UDP Socket exposes this port as a regular network socket - connect to this socket with own software and write/read data to send/receive data over the serial port without any additional software or serial port handling. UDP Socket Port The service number - the device has an “IP Address” by which it is identified and a couple of services running on it. It's required to tell the device which service should be in use by entering this device's IP address and the port number in the RemoteCOM client or user’s software. Connection Timeout [s] The time specifying how often (every how many seconds) the "keep alive" packet will be sent to check if the client is still connected. Value 0 means that the connection is kept permanently without any timeout. Inactivity Time [ms] The maximum allowed time in milliseconds during which there is no data transfer. When connection is inactive for the time longer or equal to the entered value, then it will be closed. Value 0 means there is no measure of the inactivity time at all. Encryption Determine how the data is protected 'in flight' over a network. It is available only with the RemoteCOM service. Once enabled, it is necessary to set the password. Password Protect the communication between the device and various clients - keep it secret! Same settings have to appear in clients - without the correct passwords, a client will not be able to connect at all. Termination Enable/disable termination on the RS line. Baud Rate Determine the port's transmission speed over the data channel. Data Bits Determine the number of data bits in the port's message frame. Parity Enable/disable parity check in the port's message frame. Stop Bits Determine the number of stop bits in the port's message frame. Notes These notes are for information only - feel free to write down anything related to this port (device it connects to, etc.). They're also shown in the Configurator during the device discovery - in the other words, they're public. Network page Item Description Hostname Label that is assigned to the device. DNS Address 1 (Primary) Primary Domain Name System used by the device. DNS Address 2 Domain Name System used by the device. Configuration Method Enable/disable the DHCP server. If the DHCP server is disabled, the IP address of the device has to be set manually. IP Address IP address of the device. Netmask Netmask associated with the IP address. Gateway Gateway address currently used by the device. MAC Settings Allow setting the default MAC address or typing it manually. MAC Address Allow changing the physical address of the device. HTTP Port Determine the port of the control panel. Telnet Port Allow connection with the device via Telnet. Broadcasts Notify RemoteCOM clients in the same network about this device's existence. With this enabled, the Configurator will automatically set most of the settings correctly after picking the correct port. Device page Item Description Firmware Update Update firmware. Factory Reset Restore default ports settings and default network configuration. Reboot Reboot the device. Configuration by the Serial Console List of all commands Command Description help Print the help. conn Print active TCP connections. eth_mac Print or change MAC address. exit Close current CLI session. http_port Print or change default http port. ipconfig Print or change the network configuration. net_hostname Print or change the hostname. udp_broadcast Print or turns the UDP broadcast on or off. net_stat Print lwIP statistics. ping Check internet connection with the desired host. defaults Reset application variables to defaults. restart Restart the system. reboot Same as restart. sys_heap_usage Print current heap usage. telnet_port Print or change default telnet port. uart Print or change uart configuration. uart_service Print or change uart_service configuration. user Print or change user configuration. List of commands in the service mode Command Description help Print the help. credits Print current credits value for this device. dev_ident Print the device identification value. restart Restart the system. serial_num Print the serial number of this device. version Display the bootloader version. xmodem Download image to the internal flash using xmodem. defaults Reset application variables to defaults. ipconfig Print or change the network configuration. flash_read Read bytes from flash memory. md Read bytes from memory address. In the service mode, the “ipconfig” command can only show a last static IP address. Commands Ports configuration commands In terms of ports configuration it is possible to change parameters like: service, baud rate, data bits, parity, stop bits and so on. UART commands are provided below. uart uart help Print the help message. uart list List available uarts in the system. Example: uart list 0: baud: 9600 bits: 8 stop_bits: 1 parity: none (service console) 1: baud: 115200 bits: 8 stop_bits: 2 parity: odd (covered by cons.) 2: baud: 9600 bits: 8 stop_bits: 1 parity: none 3: baud: 1200 bits: 8 stop_bits: 2 parity: even termination: ON (R-COM) 3: baud: 38400 bits: 8 stop_bits: 2 parity: none termination: OFF uart PORT_NUMBER baud BAUD Set PORT_NUMBER baudrate to BAUD. BAUD value can be one of the following: 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200. Example: uart 1 baud 9600 WARNING: UART covered by console. Changes will take place after the reset. uart PORT_NUMBER bits BITS Set bit length to BITS. BITS value can be one only 8. Example: uart 2 bits 8 uart PORT_NUMBER stop_bits STOP_BITS Set stop_bits length to STOP_BITS. STOP_BITS value can be only 1 or 2. Example: uart 2 stop_bits 1 uart PORT_NUMBER parity PARITY Set uart parity to PARITY. PARITY value can be one of the following: none, odd, even. Example: uart 3 parity even uart PORT_NUMBER termination STATE Set uart termination to new STATE. STATE can be only ON or OFF. Example: uart 3 termination ON uart_service uart_service help Print the help message. uart_service list List of uarts services status. Example: uart_service list 1 state: ON service: Remote COM port: 1504 enc: YES 2 state: OFF service: TCP Socket port: 1510 3 state: OFF service: UDP Socket port: 1510 uart_service UART_NUMBER state STATE Set UART_NUMBER state to STATE. STATE value can be only ON or OFF. Example: uart_service 1 state ON uart_service UART_NUMBER service SERVICE Set UART_NUMBER service to SERVICE. SERVICE value can be one of the following: Remote COM, TCP Socket, UDP Socket. Example: uart_service 1 service TCP Socket uart_service UART_NUMBER port PORT_NUMBER Set UART_NUMBER port to PORT_NUMBER. PORT_NUMBER value can be any in the range: 1-65535. Example: uart_service 1 port 1501 uart_service UART_NUMBER enc ENC_STATE Set UART_NUMBER encryption to ENC_STATE. ENC_STATE can be only YES or NO. Example: uart_service 1 enc YES If ENC_STATE is YES then it will ask for a new password for encryption. Network settings The following commands might be helpful to change network settings according to target LAN parameters.  ipconfig ipconfig addr ADDRESS Set IP address to ADDRESS. Example: ipconfig addr 192.168.0.10 ipconfig mask NETMASK Set subnet mask to NETMASK (in dot-decimal format). Example: ipconfig mask 255.255.255.0 ipconfig mask BIT_COUNT Set subnet mask to BIT_COUNT bits. Example: ipconfig mask 24 ipconfig gateway GATEWAY_IP Set network gateway to GATEWAY_IP. Example: ipconfig gateway 192.168.0.1 ipconfig dhcp enable/disable Enable or disable DHCP client. Example: ipconfig dhcp enable ipconfig dns1 ADDRESS Set primary DNS to ADDRESS, disable getting DNS from DHCP if enabled. Example: ipconfig dns1 192.168.100.1 ipconfig dns2 ADDRESS Set secondary DNS to ADDRESS, disable getting DNS from DHCP if enabled. Example: ipconfig dns2 1.1.1.1 eth_mac eth_mac help Print the help message. eth_mac default Set device’s MAC address to factory-default one. eth_mac set MAC_ADDR Set device’s MAC address to MAC_ADDR. Accepts both dash and colon-separated formats. Example: eth_mac set 01-02-03-04-05-06 Example: eth_mac set 01:02:03:04:05:06 http_port http_port help Print the help message. http_port PORT_NUMBER Set http port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535. Example: http_port 80 http_port status Print current http port. Example: http_port status A current http port is 80 telnet_port telnet_port help Print the help message. telnet_port PORT_NUMBER Set Telnet port to PORT_NUMBER. A PORT_NUMBER value must be in range: 1-65535. Example: telnet_port 23 telnet_port status Print current Telnet port. Example: telnet_port status A current telnet port is 23 Changing username or password To change username or password, use user command. Available commands: user help Print the help message. user mod_name USER_NAME NEW_NAME Change the user name to NEW_NAME. It fails if the name is used by another user. Example: user mod_name admin john user passwd USER_NAME Change USER_NAME's password. Example: user passwd admin ****** <- here is entered password, but '*' appears instead Note: Everyone can change the password for themselves. Procedures Configuration by the Serial Console Procedure to enter serial console mode on C20 - C22 Turn off the power of the device. Connect the PC to the C1 micro-USB port of Ethernet converter using the dedicated USB/UART converter. Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button (or connect Din pin to GND pin if the button is not mounted). Turn on the power and wait a few seconds until the  orange  LED lights up. Release the button (or disconnect Din pin from GND pin). Procedure to enter serial console mode on C23 - C25 Install STM32 Virtual COM Port Driver. Turn off the power of the device. Connect the PC to the C1 micro-USB port using the USB cable (or use the dedicated USB/UART converter). Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power and wait a few seconds until the  yellow  CN LED lights up. Release the button (or disconnect Din pin from GND pin). Redisage Configurator Configuration procedure Change the device port service to the RemoteCOM.  Set up a port number. Enable or disable encryption. If encryption is enabled create a password. In the Redisage Configurator click add the device and then set the COM number and the service port. If encryption is enabled enter a password. Click save changes. Connect to the configured serial COM port via terminal software. Service mode Procedure to enter service mode for C20 - C22 converters Turn off the power of the device. Connect Ethernet converter to the dedicated USB/UART converter via the microUSB port. Connect the USB/UART converter to the PC. Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power. Wait until the ST indicator ( red  LED) lights up. Release the S1 button. If the process is successful, service commands can be typed into the terminal. Procedure to enter service mode for C23 - C25 converters Install STM32 Virtual COM Port Driver (if it was not done before). Turn off the power of the device. Connect Ethernet converter directly to the PC (the dedicated USB/UART converter is not obligatory). Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power. Wait until the ST indicator ( red  LED) lights up. Release the S1 button. If the process is successful, service commands can be typed into the terminal. Introduction Serial Port Server (C20 - C25) Serial Port Server is a complete hardware and software solution for creating remote communication ports. The software part can be uploaded to any of the Redisage C20 - C25 Ethernet Converters. It provides a communication between a LAN host and a device equipped with RS232/RS485 serial interfaces. A dedicated app makes it easy and fast to configure and deploy. There is a possibility to create virtual COM ports with the Redisage Configurator to minimize number of cables.